class_docstr: Stream handler to collect messages in a shared queue.
  
  Used instead of stdout in import progress to capture log messages.
docstr: Placeholder to flush data
docstr_tok: ["Placeholder","to","flush","data"]
code: def flush(self):
      """Placeholder to flush data"""
  
imports: import json
  import logging
  import multiprocessing
  import os
  import traceback
  import uuid
  from datetime import datetime
  from queue import Empty
  import falcon
  from falcon import Request, Response
  from orion.core.io.database import DatabaseError
  from orion.core.utils import generate_temporary_file
  from orion.storage.backup import dump_database, load_database
label_desc: Use image node_id 3 for calling the Notifications obj's underlying member method code with example usage: obj.flush() without return types